docs: def show_stack(self, message_regex="^.*$", min_level=logging.DEBUG,
          limit=4096, once=True):
          """
          Enable showing the origin of log messages by dumping a stack trace into
          the ``stack`` logger at the :const:``logging.INFO`` severity.
  
          :param message_regex: is a full-line regex which the message must
              satisfy in order to trigger stack dump
          :param min_level: the minimum severity the message must have in order to
              trigger the stack dump
          :param limit: Maximum stack depth to show
          :param once: Only show the stack once per unique ``(logger, origin line
              of code)``
          """
          value = re.compile(message_regex), limit, once, min_level
          self.show_stack_regexes.append(value)